package com.maozai.maozaimall.auth.controller;

import com.alibaba.fastjson.TypeReference;
import com.maozai.common.constant.AuthServerConstant;
import com.maozai.common.exception.BizCodeEnume;
import com.maozai.common.utils.R;
import com.maozai.common.vo.MemberRespVo;
import com.maozai.maozaimall.auth.feign.MemberFeignService;
import com.maozai.maozaimall.auth.feign.ThirdPartFeignService;
import com.maozai.maozaimall.auth.vo.UserLoginVo;
import com.maozai.maozaimall.auth.vo.UserRegistVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

@Controller
public class LoginController {

    @Autowired
    ThirdPartFeignService thirdPartFeignService;

    @Autowired
    StringRedisTemplate redisTemplate;

    @Autowired
    MemberFeignService memberFeignService;

    @ResponseBody
    @GetMapping("/sms/sendcode")
    public R sendCode(@RequestParam("phone") String phone) {

        //TODO 1 接口防刷
        String redisCode = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + phone);
        if (!StringUtils.isEmpty(redisCode) && redisCode.length() > 0) {
            long time = Long.parseLong(redisCode.split("_")[1]);
            if (System.currentTimeMillis() - time < 60 * 1000) {
                return R.error(BizCodeEnume.SMS_CODE_EXCEPTION.getCode(), BizCodeEnume.SMS_CODE_EXCEPTION.getMsg());
            }
        }

        //2 验证码得再次校验
        String code = UUID.randomUUID().toString().substring(0, 5);
        redisTemplate.opsForValue().set(AuthServerConstant.SMS_CODE_CACHE_PREFIX + phone, code + "_" + System.currentTimeMillis(), 10, TimeUnit.MINUTES);
        thirdPartFeignService.sendCode(phone, code);
        return R.ok();
    }


    @GetMapping("/login.html")
    public String loginPage(HttpSession session) {
        Object loginUser = session.getAttribute(AuthServerConstant.LOGIN_USER);
        System.out.println("loginUser = " + loginUser);
        if (loginUser != null) {
            return "redirect:http://gulimall.com";
        }else {
            return "login";
        }
    }

    /**
     *
     * //TODO 重定向携带数据，利用session原理。
     * redirectAttributes 模拟重定向携带数据
     * @param vo
     * @param result
     * @param redirectAttributes
     * @return
     */
    @PostMapping("/regist")
    public String regist(@Valid UserRegistVo vo, BindingResult result,
                         RedirectAttributes redirectAttributes) {
        if (result.hasErrors()) {
            Map<String, String> errors = result.getFieldErrors().stream().collect(Collectors.toMap(FieldError::getField, FieldError::getDefaultMessage));
            redirectAttributes.addFlashAttribute("errors", errors);
            return "redirect:http://auth.gulimall.com/reg.html";
        }
        //真正注册，远程服务
        String code = vo.getCode();
        String s = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
        //System.out.println("redis中的验证码是：" + s);
        if (!StringUtils.isEmpty(s)) {
            if (code.equals(s.split("_")[0])) {
                //删除验证码
                redisTemplate.delete(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
                //验证码通过，调用远程服务
                R r = memberFeignService.regist(vo);
                if (r.getCode() == 0) {
                    return "redirect:http://auth.gulimall.com/login.html";
                }else {
                    Map<String, String> errors = new HashMap<>();
                    errors.put("msg", r.getData("msg", new TypeReference<String>(){}));
                    redirectAttributes.addFlashAttribute("errors", errors);
                    return "redirect:http://auth.gulimall.com/reg.html";
                }
            }else {
                Map<String, String> errors = new HashMap<>();
                errors.put("code", "验证码错误");
                redirectAttributes.addFlashAttribute("errors", errors);
                return "redirect:http://auth.gulimall.com/reg.html";
            }
        }else {
            Map<String, String> errors = new HashMap<>();
            errors.put("code", "验证码错误");
            redirectAttributes.addFlashAttribute("errors", errors);
            return "redirect:http://auth.gulimall.com/reg.html";
        }
        //注册成功回到首页
        //return "redirect:/login.html";
    }

    @PostMapping("/login")
    public String login(UserLoginVo vo, RedirectAttributes redirectAttributes,
                        HttpSession session) {
        R r = memberFeignService.login(vo);
        if (r.getCode() == 0) {
            MemberRespVo data = r.getData("data", new TypeReference<MemberRespVo>() {
            });
            session.setAttribute(AuthServerConstant.LOGIN_USER, data);
            return "redirect:http://gulimall.com";
        }else {
            Map<String, String> errors = new HashMap<>();
            errors.put("msg", r.getData("msg", new TypeReference<String>(){}));
            redirectAttributes.addFlashAttribute("errors", errors);
            return "redirect:http://auth.gulimall.com/login.html";
        }

    }

}
